Hybrid tea rose plant named ‘WEKsiamia’

ABSTRACT

A new variety of Hybrid Tea rose suitable for garden decoration, having flowers of ruby red coloration.

Classification: The present invention relates to a new Rosa hybridaplant.

Variety denomination: The new plant has the varietal denomination‘WEKsiamia’.

BACKGROUND OF THE INVENTION

This invention relates to a new and distinct variety of Hybrid Tea Rose.It has an undisseminated seedling of my creation as its seed parent withthe following genetic origin (‘City of San Francisco’(unpatented)×‘Olympiad’ (unpatented)) and has an undisseminated seedlingof my creation as its pollen parent with the following genetic origin[‘Amalia’ (unpatented)×(‘Ingrid Bergman’ (unpatented)×‘All That Jazz’(unpatented))].

SUMMARY OF THE INVENTION

Among the features which distinguish the new variety from otherpresently available and commercial rose cultivars known to the inventorare the following combinations of characteristics: its red suffusion onthe internal part of the anthers and filaments, its very large flowersand its mucronate leaf apice. The plant has an upright growing habit,suitable for outdoor garden decoration.

Asexual reproduction of the new variety by budding as performed in KernCounty and Pomona, Calif., shows that the foregoing and otherdistinguishing characteristics come true to form and are established andtransmitted through succeeding asexual propagations. ‘WEKsiamia’ may beasexually propagated by cuttings, budding and grafting. The budding andgrafting successfully occurred on the plant/rootstock Rosa hybrida cv.‘Dr. Huey’ (not patented).

COMPARISON WITH PARENTS

The new rose may be distinguished from its seed parent, anundisseminated seedling of my creation by the following combination ofcharacteristics: whereas ‘WEKsiamia’ bears very large sized (about 11.9to about 18.3 cm. in diameter) double flowers (about 18 to 25 petals),the undisseminated seedling bears significantly smaller flowers (about6.5 to about 9.0 cm. in diameter) with lesser petalage (about 11 to 16petals). The new variety has an upright medium height growing habit(about 120 to about 155 cm. in height), whereas the seed parent has asignificantly smaller rounded bushy growing habit (about 88 to about 105cm. in height).

The new variety may be distinguished from its pollen parent, anundisseminated seedling of my creation by the following combination ofcharacteristics: whereas ‘WEKsiamia’ bears double flowers (about 18 to25 petals) of ruby red coloration, the undisseminated seedlings bearsdouble flowers of brilliant orangey-red coloration with significantlyheavier petalage (about 29 to 33 petals). The new variety has an uprightmedium height growing habit (about 120 to about 155 cm. in height),whereas the pollen parent has a bushy significantly taller growinghabit.

COMPARISON WITH THE CLOSEST COMMERCIALLY AVAILABLE CULTIVAR

The new variety may be distinguished from its closest commerciallyavailable cultivar, ‘WEKfrancoly’ (U.S. Plant Pat. No. 19,373) by thefollowing combination of characteristics: whereas ‘WEKsiamia’ bearsdouble flowers (about 18 to 25 petals) of ruby red coloration,‘WEKfrancoly’ bears double flowers of lasting red coloration sometimeswith a green-white streak at the midrib of the outermost petals withsignificantly heavier petalage (about 27 to 32 petals). The new varietybears very large sized flowers (about 11.9 to about 18.3 cm. indiameter), whereas the closest commercially available cultivar bearssignificantly smaller range flower size (about 11 to about 15 cm. indiameter).

BRIEF DESCRIPTION OF ILLUSTRATION

The accompanying photograph illustrates the new variety and shows theflowering thereof from bud to full bloom depicted in color as nearlycorrect as it is possible to make in a color illustration of thecharacter. Throughout this specification, color references and/or valuesare based upon The Colour Chart of The Royal Horticultural Society(1966) except where common terms of color definition are employed.

DESCRIPTION OF THE NEW VARIETY

The following description is of 3 to 4 year-old rose plants of the newvariety grown outdoors in Pomona, Calif. in the month of October.Phenotypic expression may vary with environmental, cultural and climaticconditions, as well as differences in conditions of light and soil.

FLOWER

The new variety usually bears its flowers singly. Flowers are borne onstrong short to medium length stems (about 13 to about 65 cm.).Outdoors, the plant blooms abundantly and nearly continuously during thegrowing season. The flowers have a slight tea to spicy fragrance.

BUD

The peduncle is about 5.1 to about 7.2 cm. in length, of average tosomewhat heavy caliper (about 0.2 to about 0.4 cm. in diameter), andusually erect and somewhat stiff. It is moderately rough, with somestipitate glands. Peduncle color is between 146B and 146A often lightlysuffused, especially on the side exposed to the sun, with between 187Band 187A.

Before the calyx breaks, the bud is about 1.0 to about 1.8 cm. indiameter at the widest point, about 2.1 to about 3.1 cm. in length, andpointed in shape. The surface of the bud bears few foliaceousappendages, some hairs and many stipitate glands, usually with slenderentire foliaceous parts extending beyond the tip of the bud about ½ ormore of its length. Bud color is between 146A and 138A sometimes lightlysuffused, especially on the side exposed to the sun, with between 187Band 187A.

The sepals are about 3.2 to about 4.4 cm. in length and about 0.9 toabout 1.4 cm. in width at the widest point. The outer surface color ofthe sepal is between 146A and 138A sometimes lightly suffused,especially on the side exposed to the sun, with between 187B and 187A.The inner surface color of the sepal is near 137C broadly bordered bynear 137A. After the sepals open, the inner surface color is oftenheavily suffused, especially on the area exposed to the sun, withbetween 187A and 187B. The inner surface of the sepal is covered withfine wooly tomentum; sepal margins are lined with some stipitate glandsand hairs.

The receptacle of the flower is of short length (about 0.3 to about 0.5cm.) and moderately thin in caliper (about 0.7 to about 0.9 cm. indiameter). The receptacle is cup-shaped in form. Its surface is verysmooth with somewhat thin fleshy walls. The receptacle color is between144A and 138A.

As the petals open (after the calyx breaks), the bud is about 1.9 toabout 2.4 cm. in diameter at the widest point, about 3.2 to about 3.9cm. in length, and moderately ovoid to pointed in form. The color of theunder surfaces of the newly opened petals is between 59A and 46Asometimes heavily suffused near the petal edge with near 187A. At thepoint where the petal attaches, there is a very small zone of between 1Cand 154C. The color of the upper surfaces of the newly opened petals isbetween 187B and 46A. At the point where the petal attaches, there is asmall zone of between 13B and 12B.

BLOOM

When fully open, the bloom ranges from about 11.9 to about 18.3 cm. indiameter. Petalage is double with about 18 to 25 petals and about 2 to 6petaloids irregularly arranged. When partially open, the bloom form issomewhat high centered to cupped, and the petals are loosely spiraled tocupped with petal edges slightly reflexed outward. When fully open, thebloom form is more cupped, and the petals are loosely cupped tomoderately undulated with petal edges somewhat reflexed outward.

PETALS

The substance of the petals is moderately heavy and of medium thickness,with upper surfaces slightly satiny and under surfaces moderately shiny.The petals are about 4.6 to about 8.7 cm. in length and about 3.7 toabout 8.3 cm. in width at the widest point. Petal margins are entire.

The outer petals are nearly round to somewhat obovate in shape withrounded apices.

The inner petals are moderately obovate in shape with rounded apices.

Petaloids are about 0.5 to about 4.0 cm. in length and about 0.4 toabout 3.4 cm. in width at the widest point. Petaloids are irregularlyshaped somewhat obovate with rounded apices.

NEWLY OPENED FLOWER

The under surface color of the outer, intermediate and inner petals isbetween 53C and 46B. At the point where the petal attaches, there is avery small zone of between 3C and 4B. The upper surface color of theouter, intermediate and inner petals is between 45A and 42A sometimeslightly blushed toward the petal edge with between 187A and 187B. At thepoint where the petal attaches, there is a small zone of between 13B and12B.

The under and upper surface colors of the petaloids are similar incoloration to the upper and under surfaces of the intermediate and innerpetals.

The general tonality of the newly opened flower is between 45A and 42Asometimes lightly blushed toward the petal edge with between 187A and187B.

THREE-DAY-OLD FLOWER

The under surface color of the outer, intermediate and inner petals isbetween 60D and 46C. At the point where the petal attaches, there is avery small zone of between 4D and 2D. The upper surface color of theouter, intermediate and inner petals is between 53C and 46C. At thepoint where the petal attaches, there is a small zone of between 10D and11C.

The under and upper surface colors of the petaloids are similar incoloration to the upper and under surfaces of the intermediate and innerpetals.

The general tonality of the three-day-old flower is between 53C and 46C.

On the spent bloom, the petals usually drop off cleanly.

In October in Pomona, Calif., blooms on the bush growing outdoorsgenerally last about four to five days. Cut roses from plants grownoutdoors and kept at normal indoor living temperatures generally lastabout four to five days.

MALE REPRODUCTIVE ORGANS

Stamens are many in number (average about 125) and are arrangedregularly about the pistils; a few are mixed with petaloids. Thefilaments are of medium length (about 0.4 to about 1.0 cm.) most withanthers. Filaments are between 3B and 2B in color usually heavilysuffused with between 53B and 53C. The anthers are moderately large forthe class and all open approximately at the same time. Anther color whenimmature is near 22B on the external part and near 11D on the internalpart often moderately suffused with between 59C and 60B. Anther color atmaturity is near 161C on the external part and near 200B on the internalpart. Pollen is moderately abundant and between 11B and 12D in color.

FEMALE REPRODUCTIVE ORGANS

Pistils vary in number (average about 80). The styles are moderatelyeven, somewhat long in length (about 0.8 to about 1.2 cm.), average incaliper, and loosely separated. Stigma color is between 9C and 8B. Stylecolor is between 154C and 1C often moderately suffused with near 53B.Ovaries are usually all enclosed in the calyx.

Hips have not been observed on this variety when grown in Pomona, Calif.

FOLIAGE

The compound leaves are usually comprised of three to seven leaflets andare borne abundantly. The five-leaflet leaves are about 9.2 to about15.6 cm. in length and about 8.3 to about 11.8 cm. in width at thewidest point, moderately heavy to crisp in texture, and moderatelyglossy in finish on the upper side and matte in finish on the underside. The terminal leaflets are about 4.4 to about 6.4 cm. in length andabout 3.6 to about 5.6 cm. in width at the widest point, shapedmoderately ovate with mucronate apices and rounded bases. Their marginsare usually simply serrate.

The upper surface color of the mature leaf is between 147A and 137A. Theunder surface color of the mature leaf is between 147B and 139B. Theupper surface color of the young leaf is between 137A and 139B, oftenheavily suffused with between 187A and 183A. The under surface color ofthe young leaf is between 139C and 138B, often heavily suffused withbetween 187B and 183A.

The rachis is moderately heavy in caliper and rough. The upper side isdeeply grooved with some hairs and stipitate glands on the edges of thegrooves. The under side of the rachis is rough with few stipitate glandsand small prickles. The rachis color is near 146C on the under side andnear 137A on the upper side often heavily suffused, especially on theyoung leaves, with between 187B and 183A.

The stipules are about 1.0 to about 2.0 cm. in length and moderatelywide (about 0.5 to about 0.8 cm.) with somewhat short straight pointsthat usually turn out at an angle of more than 45 degrees and sometimesrecurve toward the stem. The stipule color is between 137A and 138Asometimes moderately suffused, especially on the young leaves, withbetween 187B and 183A.

The petiole is moderately heavy in caliper and rough. The upper side isdeeply grooved with some hairs and stipitate glands on the edges of thegrooves. The under side of the petiole is rough with few stipitateglands and small prickles. The petiole is about 0.9 to about 1.6 cm. inlength and about 0.1 to about 0.2 cm in diameter at the widest point.The petiole color is near 146C on the under side and near 137A on theupper side often heavily suffused, especially on the young leaves, withbetween 187B and 183A.

The plant displays an average degree of resistance to powdery mildew andrust as compared to other commercial varieties grown under comparableconditions in Pomona, Calif. The plant's winter hardiness anddrought/heat tolerance are yet to be determined.

GROWTH

The plant has an upright medium height growing habit (about 120 to about155 cm. in height and about 52 to about 62 cm. spread at the widestpoint), with moderately full branching. It displays vigorous growth andthe canes are of medium to somewhat heavy caliper for the class (about1.4 to about 1.8 cm. in width at the widest point).

The color of the major stems is between 146A and 146B. They bear somelarge prickles that are about 0.6 to about 0.9 cm. in length. The largeprickles are hooked moderately downward with a very long broad ovalbase; prickle color is between 177B and 166C. The major stem bears fewsmall prickles of similar shape and coloration.

The color of the branches is between 137C and 139B. They bear some largeprickles which are of similar size and shape to the large prickles onthe major stems; prickle color is between 1C and 160A. The branches bearfew small prickles of similar shape and coloration.

The color of the new shoots is between 146C and 139B often heavilysuffused with between 187B and 183A. They bear some large prickles whichare of similar size and shape to the large prickles on the major stems;prickle color is between 1C and 160A often moderately suffused withbetween 187C and 187D. The shoots bear few small prickles of similarshape and coloration.

1. A new and distinct Hybrid Tea rose plant of the variety substantiallyas described and illustrated herein.